Over 500 million tons of HMA are placed in the United States each year so it's important that the material be properly sampled and tested during construction to ensure satisfactory performance. When ...

When it comes to testing hot-mix asphalt (HMA), one can scarcely top the usefulness of real-world performance results. That is the basic principle behind the construction by the National Center for ...

It sounds simple, but you need to know what kind of lab you're trying to build before you get started. Do you need a lab that is just capable of doing routine quality control work or do you want a ...

Rubblized PCC pavement is seated by unique Z-grid on the drum of a Bomag R-14 single-drum base compactor on I-70 near Casey, Ill.Photo: Illinois Asphalt Pavement Association Coarse, well-draining ...